Quantity: Four pieces of a set. Used but in good condition; you can inspect and check them in the car. These are Sony XS-GTF1639 three-way car speakers. Maximum output power: 270 watts Rated power (RMS): 45 watts Size: 6.5 inches (16 cm) The woofer cone is made of aramid carbon fiber HOP for deep and powerful bass sound. Space-saving design and easy to install.